blob: fc2a7052c50020b08e82d8926a852299d4432c56 [file] [log] [blame]
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter/widgets.dart';
void main() {
test('ClampingScrollSimulation has a stable initial conditions', () {
void checkInitialConditions(double position, double velocity) {
final ClampingScrollSimulation simulation = ClampingScrollSimulation(position: position, velocity: velocity);
expect(simulation.x(0.0), moreOrLessEquals(position));
expect(simulation.dx(0.0), moreOrLessEquals(velocity));
}
checkInitialConditions(51.0, 2866.91537);
checkInitialConditions(584.0, 2617.294734);
checkInitialConditions(345.0, 1982.785934);
checkInitialConditions(0.0, 1831.366634);
checkInitialConditions(-156.2, 1541.57665);
checkInitialConditions(4.0, 1139.250439);
checkInitialConditions(4534.0, 1073.553798);
checkInitialConditions(75.0, 614.2093);
checkInitialConditions(5469.0, 182.114534);
});
}